Chitosan is widely used in various industries due to its unique properties. In the medical and pharmaceutical fields, it is employed for wound healing thanks to its antibacterial and biocompatible properties, promoting tissue regeneration and controlling bleeding. It is also used in dietary supplements to help reduce cholesterol and manage weight. In agriculture, chitosan acts as a natural biopesticide and plant growth enhancer, protecting crops from diseases. The food industry utilizes it as a preservative and coating for fruits and vegetables to extend shelf life by inhibiting microbial growth. Additionally, it is applied in water treatment to remove heavy metals and impurities via its chelating ability. In cosmetics, chitosan provides moisturizing, anti-aging effects, and improves skin elasticity for skin and hair care products.